How do you beat the Brain of Cthulhu?

To beat the Brain of Cthulhu, use large swords or melee weapons that are long-ranged, such as Yoyos and Flails, like the Artery yoyo, which is made from Crimtane ore, and keep using your platforms to jump out of the way, while using your strongest weapon to take down the Brain. The Brain of Cthulhu can be killed fairly quickly, as it only has 1000 / 1700 / 2167 health, making it one of the easiest bosses in the game.

Frequently Asked Questions

General Information

1. What is the Brain of Cthulhu?: The Brain of Cthulhu is a pre-Hardmode, Crimson-themed boss resembling a large, flying brain, which can be summoned when 3 Crimson Hearts are destroyed in a Crimson world, or when a player uses a Bloody Spine anywhere in The Crimson or Underground Crimson biome.

Difficulty and Comparison to Other Bosses

2. Is Skeletron harder than Brain of Cthulhu?: The Brain of Cthulhu is weaker than Skeletron, and will drop materials to make better weapons and armor for yourself, making it a good idea to defeat the Brain before facing Skeletron.
3. Which is harder, Eater of Worlds or Brain of Cthulhu?: The Brain of Cthulhu is the Crimson counterpart to the Eater of Worlds, but it can be a bit more difficult to defeat, especially in Expert mode, as the Brain can inflict random debuffs on you.
4. Is Brain of Cthulhu easier than Eye of Cthulhu?: The Brain of Cthulhu has the least health out of all the bosses, with even less than the Eye of Cthulhu in its second form, but when adding in the health of the Creepers, it has more health than King Slime.

Strategy and Equipment

5. What armor should I use to fight Brain of Cthulhu?: Crimson armor by killing enough Creepers without necessarily defeating the Brain itself, or Tungsten armor are slightly riskier, but ultimately also viable options, especially if you are confident in your dodging abilities.
6. What gear is recommended for Brain of Cthulhu?: The Flinx Fur Coat is the only armor that can boost summon damage at this stage of the game, and Rocket Boots or its upgrades are recommended as they can help with dodging.
7. What weapon is good against Brain of Cthulhu?: Melee – Large swords or melee weapons that are long-ranged are the best options, like Yoyos and Flails, like the Artery yoyo, which is made from Crimtane ore.

Rewards and Progression

8. What does killing Brain of Cthulhu do?: Defeating the Brain of Cthulhu and its attendant Creepers is the only way to obtain Tissue Samples, and is one of the ways to obtain usable quantities of Crimtane Ore.
9. What does the Brain of Cthulhu drop?: The Brain of Cthulhu drops lots of Crimtane Ore, 40+ from one kill, the Bone Rattle, a boss-summoning item (only a five per cent drop chance), the Brain of Cthulhu mask (a vanity item), and the Brain of Cthulhu Trophy (can be placed inside your house).

Health and Statistics

10. How much HP does the Brain of Cthulhu have?: The Brain of Cthulhu has 1000 / 1700 / 2167 health, making it one of the easiest bosses in the game.
11. How hard is it to beat the Brain of Cthulhu?: The Brain only has 1000 / 1700 / 2167 health, so it can be killed fairly quickly, as long as you keep using your platforms to jump out of the way, and use your strongest weapon to take down the Brain.

Game Progression and Summoning

12. When should I fight the Brain of Cthulhu?: The Brain of Cthulhu is a pre-Hardmode Crimson boss in Terraria that is pretty much essential to game progression if you want the Tavernkeeper and Meteorites to spawn on your world.
13. What happens if you fail Brain of Cthulhu?: If all players die, or leave the Crimson, the Brain of Cthulhu will move downwards and despawn, however, if players return to the Crimson before the Brain of Cthulhu despawns, the battle will continue as normal.

Additional Information

14. Can you fight Brain of Cthulhu on surface?: The Brain of Cthulhu can be fought in either the Surface or Underground Crimson, as either one provides plenty of room to dodge the Brain’s incoming attacks.
15. Is the Moon Lord Cthulhu?: While initially explained to be Cthulhu’s brother, it was later confirmed in a lore post on the official forum that the Moon Lord was, indeed, Cthulhu himself, making it a crucial part of the game’s lore and storyline.